Are you good at equations?

I need to prove how 1 ohm is equal to
1 J/C*A
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J being Joules
C being coulombs
A being Amperes
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So far I got this, tell me if i'm going in the right track.
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1 J/C*A -- 1 kg*m/s^2 over C and A
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Now how can I do the rest knowing that you can find an ohm by the equation R = p*L/A? I know that a coulomb is the inverse of 6.24*10^18 and its 1 A*s.